Adjust voltage settings for an i7 13700kf on an MSI B760 DDR5 cardboard
Adjust voltage settings for an i7 13700kf on an MSI B760 DDR5 cardboard
I'm not entirely confident about this. I've only had the system operational for a week and performed minimal adjustments in the BIOS. From what I remember, I locked the cores, adjusted the 51/41 multiplier per core group, fixed the Vcore to 1.1, set the line load to 1, and used water cooling at maximum capacity to push power limits. That's about it.
I kept all settings at their defaults, except I turned off the UVP and adjusted the core voltage offset. Now the system is prompting about the offset mode—should I use PWM or CPU-based? Refer to the attached image for guidance. Uncertain which option is best.
I don't believe I interacted with it. Is there an alternative configuration that avoids the 'offset' mode and maintains a constant voltage? I can't verify from here.
There seems to be another configuration option available, which appears safer to adjust. I believe this setting carries less risk. I see a significant drop in performance in Cinebench—my score fell from around 28k to just under 14k. The cores also display a maximum clock speed of 4.6ghz during the multi-core test. I’m not sure what’s causing this issue. However, changing the voltage offset or switching to light load mode noticeably improves my results, allowing me to reach temperatures up to 77°C while maintaining performance.
Thanks for your assistance! I discovered a Reddit discussion where someone mentioned z chips can operate without affecting performance, while b chips face problems. I believed disabling the UVP shouldn't impact performance costs. Check out this thread: And this one:
Update quickly: adjusting core voltage with offset and a reboot made the BIOS almost unusable. Probably they’re trying to make it tougher to undervolt. I think they should review their defaults. Building PCs feels less enjoyable now—maybe I’ll opt for a prebuilt next time. Edit: I disabled UVP in BIOS, set power draw to max 200W, reset everything back to defaults, and applied a CPU core voltage offset of -0.050 or -0.0750. Now Cinebench score is 28k with a max temp of 87°C, compared to the previous 100-102°C max before HWINFO reported vcore values: Max 1.336V, Min 0.700V, average 1.174. Edited June 20, 2023 by caevv added test results.
It seems I can't change the offset directly. I shared some BIOS photos; most settings stay on defaults except for voltage offset and the maximum power limit of 200W. You adjusted it to -0.100, which is the highest allowed. Still, Cinebench shows up to 200W, but the temperature stays at 86°C and the score remains 27.5k. Thanks for the update! Edited June 20, 2023 by caevv
I pushed my power limits just to stay independent from restrictions. On my setup, adjusting the CPU cooler tuning seemed to cap how much power the CPU could use. Since I have a custom loop, I chose 'water cooled' and it was limited to 4096W, which is what you see. Checking the Reddit thread about B series boards suggests it might be an issue, though it seems like you've hit a good balance.